<template>
  <section>
    <!--工具条：高级查询 + 新增-->
    <el-col :span="24" class="toolbar" style="padding-bottom: 0px;">
      <el-form :inline="true">
        <el-form-item>
          <el-input v-model="keyword" placeholder="请输入关键字"></el-input>
        </el-form-item>
        <el-form-item>
          <el-button type="primary" v-on:click="keywordQuery">查询</el-button>
        </el-form-item>
        <el-form-item>
          <el-button type="primary" @click="handleAdd">新增</el-button>
        </el-form-item>
      </el-form>
    </el-col>

    <!--列表-->
    <!--
      :data="employees" - 列表数据
      highlight-current-row v-loading="listLoading" - 当前行高亮
      @selection-change="selsChange" - 选项改变就是触发
      v-loading="listLoading" - 记载框
    -->
    <el-table :data="employees" highlight-current-row v-loading="listLoading"
              @selection-change="selsChange"
              style="width: 100%;">
      <el-table-column type="selection" width="55">
      </el-table-column>
      <el-table-column type="index" width="60">
      </el-table-column>
      <el-table-column prop="username" label="名称" width="120">
      </el-table-column>
      <el-table-column prop="phone" label="电话" width="120">
      </el-table-column>
      <el-table-column prop="email" label="邮箱" width="150">
      </el-table-column>
      <el-table-column prop="age" label="年龄" width="100">
      </el-table-column>
      <el-table-column prop="state" label="状态" width="120" sortable>
        <template scope="scope">
          <span v-if="scope.row.state==0" style="color: red">禁用</span>
          <span v-else style="color: green">启用</span>
        </template>
      </el-table-column>
      <el-table-column prop="department.name" label="所属部门" width="120">
      </el-table-column>
      <el-table-column label="员工类型" width="120">
        <template scope="scope">
          <span v-if="scope.row.shop_id" style="color: red">店铺管理员</span>
          <span v-else style="color: green">员工管理员</span>
        </template>
      </el-table-column>
      <el-table-column label="操作">
        <template scope="scope">
          <el-button size="small" @click="handleEdit(scope.$index, scope.row)">编辑</el-button>
          <el-button type="danger" size="small" @click="handleDel(scope.$index, scope.row)">删除</el-button>
        </template>
      </el-table-column>
    </el-table>

    <!--工具条：批量删除 + 分页栏-->
    <el-col :span="24" class="toolbar">
      <!--
        :disabled="this.sels.length===0"
        当sels长度为0的时候，显示当前属性disabled - 禁用。如果不为0就不禁用
       -->
      <el-button type="danger" @click="batchRemove" :disabled="this.sels.length===0">批量删除</el-button>
      <el-pagination layout="prev, pager, next" @current-change="handleCurrentChange"
                     :page-size="pageSize" :total="totals" :current-page="currentPage" style="float:right;">
      </el-pagination>
    </el-col>

    <!--编辑界面-->
    <!--
      title="添加或修改" - 标题
      :visible.sync="saveFormVisible" - 控制当前对话框是否显示 - 默认为false不显示
      :close-on-click-modal="false" - 点击对话框以外的区域不关闭
    -->
    <el-dialog :title="title" :visible.sync="saveFormVisible" :close-on-click-modal="false">
      <el-form :model="saveForm" label-width="80px" :rules="saveFormRules" ref="saveForm">
        <el-form-item label="名称" prop="username">
          <el-input v-model="saveForm.username" auto-complete="off"></el-input>
        </el-form-item>
        <el-form-item label="电话">
          <el-input v-model="saveForm.email" auto-complete="off"></el-input>
        </el-form-item>
        <el-form-item label="邮箱">
          <el-input v-model="saveForm.phone" auto-complete="off"></el-input>
        </el-form-item>
        <el-form-item label="密码">
          <el-input type="password" v-model="saveForm.password" auto-complete="off"></el-input>
        </el-form-item>
        <el-form-item label="年龄">
          <el-input v-model="saveForm.age" auto-complete="off"></el-input>
        </el-form-item>
        <el-form-item label="状态">
          <el-radio-group v-model="saveForm.state">
            <el-radio class="radio" :label="1">启用</el-radio>
            <el-radio class="radio" :label="0">禁用</el-radio>
          </el-radio-group>
        </el-form-item>
        <el-form-item label="所属部门">
          <el-select v-model="saveForm.department_id" placeholder="请选择">
            <el-option v-for="item in departments"
                :label="item.name"
                :value="item.id">
            </el-option>
          </el-select>
        </el-form-item>
      </el-form>
      <div slot="footer" class="dialog-footer">
        <el-button @click.native="saveFormVisible = false">取消</el-button>
        <el-button type="primary" @click.native="saveSubmit" :loading="saveLoading">提交</el-button>
      </div>
    </el-dialog>

  </section>
</template>

<script>
export default {
  data() {
    return {
      //1.分页查询的相关参数
      employees: [],  //列表数据
      pageSize: 5,      //每页显示的条数
      currentPage: 1,   //当前页
      totals: 0,        //总数量
      listLoading: false, //加载框

      //2.高级查询的相关参数
      keyword: '',

      //3.批量删除的相关数据
      sels: [],//列表选中列

      //4.添加或修改的相关数据
      title:'',
      saveFormVisible: false, //控制对话框是否显示 - 默认不显示
      saveLoading: false,     //保存的加载框 - 默认不显示
      saveFormRules: {        //表单项验证
        username: [
          {required: true, message: '请输入姓名', trigger: 'blur'}
        ]
      },
      //添加和修改中对话框的数据
      saveForm: {
        id: null,
        username: '',
        phone: '',
        email: '',
        password: '',
        age: 0,
        state: 1,
        department_id: null
      },

      //显示所有的部门
      departments: [],
    }
  },
  methods: {
    //1.获取部门列表
    getEmployees() {
      let para = {
        currentPage: this.currentPage,
        pageSize: this.pageSize,
        keyword: this.keyword
      };
      this.listLoading = true; //显示加载框
      this.$http.post("/employee", para).then(res => {
        this.employees = res.data.data;//给数组赋值 - 显示列表数据
        this.totals = res.data.totals;  //给总数量赋值 - 计算分页栏
        this.listLoading = false;//关闭加载框
      }).catch(res => {
        this.$message.error("系统繁忙，请稍后重试!!!");
      })
    },

    //2.点击分页实现
    handleCurrentChange(val) {
      this.currentPage = val;
      this.getEmployees();
    },

    //3.高级查询 = 关键字查询
    keywordQuery(){
      //防止当前页不在第一页的时候 通过关键字查询出现 当前页没有数据的情况
      this.currentPage = 1;
      this.getEmployees();
    },

    //4.删除功能逻辑
    handleDel: function (index, row) {
      //elementUi提供确认框 - 点确定之后执行then里面的代码，点击取消执行catch中的逻辑
      this.$confirm('确认删除该记录吗?', '提示', {
        type: 'warning'
      }).then(() => {
        this.listLoading = true; //显示加载框
        this.$http.delete("/employee/"+row.id).then(res=>{
          this.listLoading = false; //关闭加载框
          if(res.data.success){
            this.$message.success("删除成功"); //提示成功消息

            //删除成功之后对当前页的处理【特殊情况：删除最后一页的最后一条数据】
            var totalPage = Math.ceil(this.totals/this.pageSize); //总页数 = 最后一页
            //如果当前页是最后一页                  并且是最后一条数据                  并且不是第一页
            if(this.currentPage==totalPage && (this.totals-1)%this.pageSize==0 && this.currentPage!=1){
              this.currentPage--;
            }

            this.getEmployees();
          }else{
            this.$message.error("系统繁忙，请稍后重试!!![500]"); //后端500错误走这里
          }
        }).catch(res=>{
          this.$message.error("系统繁忙，请稍后重试!!![400,404]");
        })
      }).catch(() => {
      });
    },

    //5.选项改变的时候触发的逻辑
    selsChange: function (sels) {
      //将选中的对象的数组  赋值给 模型数据sels
      this.sels = sels;
    },

    //6.批量删除逻辑
    batchRemove: function () {
      //获取数组中每一个对象的id 并形成新的数组
      var ids = this.sels.map(item => item.id);
      this.$confirm('确认删除选中记录吗？', '提示', {
        type: 'warning'
      }).then(() => {
        this.listLoading = true; //显示加载框
        this.$http.patch("/employee",ids).then(res=>{
          this.listLoading = false; //隐藏加载框
          if(res.data.success){ //操作成功
            this.currentPage = 1;
            this.getEmployees();
          }else{ //操作失败
            this.$message.error("系统繁忙，请稍后重试!!![500]"); //后端500错误走这里
          }
        }).catch(res=>{
          this.$message.error("系统繁忙，请稍后重试!!![400,404]");
        })
      }).catch(() => {
      });
    },

    //7.点击修改按钮弹出对话框
    handleEdit: function (index, row) {
      this.title = "编辑";
      //弹出对话框
      this.saveFormVisible = true;
      //回显数据：创建一个新的空对象{}，然后将row中的数据拷贝一份给{}
      this.saveForm = Object.assign({}, row);
      //获取所有的部门
      this.getDepartments();
    },

    //8.点击新增按钮弹出对话框
    handleAdd: function () {
      this.title = "新增";
      this.saveFormVisible = true;
      this.saveForm = {
        id: null,
        sn: '',
        name: '',
        state: 1,
        manager_id: null,
        parent_id: null
      };
      //获取所有的部门
      this.getDepartments();
    },

    //9.点击保存提交数据到后端
    saveSubmit: function () {
      //表单验证：只要表单项中任何一个验证不通过，都不能点击提交
      //所有的ref中名称为saveForm的表单
      this.$refs.saveForm.validate((valid) => {
        if (valid) { //表单验证通过 => 每一个表单项都通过了
          this.$confirm('确认提交吗？', '提示', {}).then(() => {
            this.saveLoading = true; //显示加载框
            let para = Object.assign({}, this.saveForm);
            this.$http.put("/employee",para).then(res=>{
              this.saveLoading = false;  //关闭加载框
              this.saveFormVisible = false; //关闭对话框
              if(res.data.success){
                this.getEmployees();//重新加载新的数据
              }else{
                this.$message.error("系统繁忙，请稍后重试!!![500]");
              }
            }).catch(res=>{
              this.saveLoading = false;  //关闭加载框
              this.saveFormVisible = false; //关闭对话框
              this.$message.error("系统繁忙，请稍后重试!!![400,404]");
            })
          });
        }
      });
    },

    //10.获取所有的部门经理 - 员工
    getDepartments(){
      this.$http.get("/department").then(res=>{
        this.departments = res.data;
      })
    }

  },
  mounted() {
    this.getEmployees();
  }
}

</script>

<style scoped>

</style>